Alexeeva qualified as a junior elite gymnast in 2016, making her elite debut at the American Classic that May. She finished third in the all-around and on uneven bars, winning one gold on balance beam. In June, she competed at the U.S. Classic, placing first in both the junior all-around competition and the balance beam. However, she was ineligible to compete at the 2016 U.S. National Gymnastics Championships in St. Louis, Missouri as she was not an American citizen. Alexeeva spent the 2017 season recovering from an injury.
Senior
2018
In her first year as a Senior gymnast, Alexeeva competed at International Gymnix in Canada, where she won the bronze medal in the All-Around and the gold medal on floor exercise and uneven bars. After being unable to obtain American citizenship, Alexeeva competed at the Russian National Championships in April in hopes of making the Russian National Team. There she placed 7th in the All-Around after falling off the balance beam. She also placed second on uneven bars, behind Angelina Melnikova and ahead of 2011 and 2015 World ChampionViktoria Komova, and third on floor exercise, behind Melnikova and Angelina Simakova. In May, Alexeeva was officially added to the Russian National Team, replacing Natalia Kapitonova. She later returned to Moscow and began training at Round Lake. In June, she received her FIG license, enabling her to officially represent Russia in international competitions. Later that month, Alexeeva was slated to compete at the Russian Cup but had to pull out due to a knee injury. On 20 July, Alexeeva was named to the Russian team to compete at the 2018 European Championships alongside Melnikova, Simakova, Lilia Akhaimova, and Uliana Perebinosova. Alexeeva only competed on uneven bars and balance beam in the qualification. She scored high enough to qualify to the Uneven Bars Finals but did not qualify due to her teammates Melnikova and Perebinosova scoring higher. She once again competed on uneven bars and balance beam in the Team Finals where Russia won the gold medal. On 29 September, Alexeeva was named on the nominative team roster to compete at the 2018 World Championships in Doha, Qatar alongside Akhaimova, Melnikova, Aliya Mustafina, and Simakova. On 17 October, the World team was officially announced and was unchanged from the nominative team. During qualifications Alexeeva competed on all four events. She qualified to the All-Around in 12th and Russia qualified to the Team Final in second place. During the team final Alexeeva competed on vault, uneven bars, and balance beam, helping Russia win the silver medal. In the All-Around Final she finished 13th.
In February Alexeeva competed at the WOGA Classic as a Level 10 competitor. She only competed on uneven bars and balance beam where she recorded the second highest score on each in her session.